Quick-acting clamp



G. C. IRELAND.

QUICK ACTING CLAMP. APPLICATION FILED DEC. 9. 1915.

1,331,505. Patented Feb. 24,1920,

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L? J 2 6 1/ 4 [woooca voooo E 1 UNITED STATES PATENT OFFICE.

GEOBQE OF BRANTFOBD, ONTARIO, CANADA.

QUICK-ACTING CLAMP.

Application filed December 9, 1915.

To all whom it may concern:

Be it known that I, GEORGE C. IRELAND, a subject of the King of England, residingat Brantford, in the Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Quick- Acting Clamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention is directed to improvements in quick acting clamps, and has for its object to provide a device of this character which is extremely simple in con struction and one which is particularly adapted for use in connection with foundry molds, whereby the same can be efiectively clamped.

A further object of theinvention is to provide a clamp of this nature which can be quickly adjusted for engaging the work after which the same can be set to its final clamped position, and while the device is particularly adapted for use in connection with molds, it will be of course understood that the same can be used for clamping wood, or for any other purpose seen fit.

With these and other objects in view, this invention resides in the novel features of construction, formation, combination and arrangement of parts to be hereinafter more fully dcscibed, claimed and illustrated in the accompanying drawing, in which Figure 1 is plan view of the device.

Fig. 2 is a side elevation.

Fig. 3 is an end view.

Fig. 4 is a sectional view on line 4-1 of F 1.

Fig. 5 is a bottom plan view.

Fig. 6 is a sectional view on line 66 of Fig.

The device consists of a pair of sections 1 and 2, the section 1 having its outer end provided with a jaw 3, said section being further provided with a longitudinal channel constituting a guide 4 for slidably receiving the section 2. The section 2 has its outer surface provided with a series of spaced pins 5, while the inner end of said section is provided with a handle 6, whlch serves to permit the section 2 to be quickly adjusted.

Specification of Letters Patent.

Patented Feb. 24, 1920.

Serial No. 65,987.

The section 2 has its outer end provided with a jaw 7, which is adapted to engage one part of the work, when another part thereof is engaged by the jaw 3.

A housing 8 is carried by the inner end of the section 1 and has one side thereof provided with a slot 9, in which is pivotally connected a substantially straight hand lever 10, said lever having its extreme inner end reduced to a point and provided in one edge with a curved seat 11, adapted to engage a selected pin 5. lVhen the inner end of the lever is engaged with one of the pins, inward movement of its handle will draw the jaws 3 and 7 toward each other and into clamping engagement with the work, and to hold the jaws in a clamped position a pawl 12 is pivotally connected to the handle end of the lever and is adapted to engage a straight rack of teeth 13 formed along one edge of the section 1.

lVhen it is desired to adjust the section 2, the lever 10 is turned to a position substantially parallel with the sections by swinging its handle outward to its fullest extent toward the jaw 3, thus swinging the inner end thereof entirely out of the path of movement of the pins. The sections are then moved until the jaws are brought to their approximate clamping position, whereupon the lever is swung in a reverse direction to position substantially perpendicular to the sections so that the inner end thereof will engage one of the pins. When this is done, it is only necessary to swing the lever inward toward the jaw 7, thus bringing the jaws into full clamped engagement with the work, whereupon the pawl 12 is engaged with a selected tooth to hold the jaws in firm clamped engagement with the work.

hat is claimed is In a quick acting clamp, the combination with one section having in one face a row of outstanding pins, a handle at the inner end of said row, and a rigid rightangular jaw at the outer end of said section; of a second section having a longitudinal channel constituting a guide in which the first section is slidably mounted, a straight rack of teeth along one edge of this section, a right angular jaw at its outer end, a housing at its inner end, a substantially straight lever pivoted in the housing and reduced at its inner extremity to engage said. pins when In testimony whereof, I afiix my signait stands substantially perpendicular to the ture, in the presence of two witnesses.

'members or to be thrown wholly out of line i V GEORGE IRELAND with the pins when it is turned to a position parallel with such members, and a pawl piv- Witnesses: oted to the outer arm of the lever and aolapt-' LOUISE PATTERSON,

. ed to engage the teeth in said rack. S. P. PITCHER. 

